Mitochondrial antiviral-signaling protein - Q7Z434 (MAVS_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q7Z434: 9
 
Function
Required for innate immune defense against viruses. Acts downstream of DDX58/RIG-I and IFIH1/MDA5, which detect intracellular dsRNA produced during viral replication, to coordinate pathways leading to the activation of NF-kappa-B, IRF3 and IRF7, and to the subsequent induction of antiviral cytokines such as IFN-beta and RANTES (CCL5). Peroxisomal and mitochondrial MAVS act sequentially to create an antiviral cellular state. Upon viral infection, peroxisomal MAVS induces the rapid interferon-independent expression of defense factors that provide short-term protection, whereas mitochondrial MAVS activates an interferon-dependent signaling pathway with delayed kinetics, which amplifies and stabilizes the antiviral response. May activate the same pathways following detection of extracellular dsRNA by TLR3. May protect cells from apoptosis. UniProt
Pathway Maps
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      ESCHER  BiGG
Subunit Structure
Self-associates and polymerizes (via CARD domains) to form 400 nM long three-stranded helical filaments on mitochondria, filament nucleation requires interaction with DDX58/RIG-I whose CARD domains act as a template for filament assembly. Interacts with DDX58/RIG-I, IFIH1/MDA5, TRAF2, TRAF6 and C1QBP (PubMed:17600090). May interact with IRF3, FADD, RIPK1, CHUK and IKBKB. Interacts with NLRX1. Interaction with NLRX1 requires the CARD domain. Interacts with PSMA7. Interacts with TRAFD1 (By similarity). Interacts (via C-terminus) with PCBP2 in a complex containing MAVS/IPS1, PCBP2 and ITCH. Interacts with CYLD. Interacts with SRC. Interacts with DHX58/LGP2 and IKBKE. Interacts with TMEM173/MITA. Interacts with IFIT3 (via N-terminus). Interacts with TBK1 only in the presence of IFIT3. Interacts with MUL1. Interacts with ANKRD17. Interacts with and is cleaved by HCV and hepatitis GB virus B NS3/4A proteases. Interacts with and is cleaved by HHAV protein 3ABC. Interacts with human respiratory syncytial virus (HRSV) NS1 protein; this interaction disrupts MAVS binding to DDX58/RIG-I. Interacts with NDFIP1 (PubMed:23087404). Interacts with SMURF1; the interaction is mediated by NDFIP1 and leads to MAVS ubiquitination and degradation (PubMed:23087404). UniProt
Domain
The transmembrane domain and residues 300-444 are essential for its interaction with DHX58/LGP2. UniProt
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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